An open-cycle liquid oxygen kerosene engine system and using method

Abstract

The invention discloses an open cycle liquid oxygen kerosene engine system and a using method. The system uses low-cost liquid oxygen and kerosene as propellants to meet the starting and ignition functions of the engine, reduce the production cost of the engine, and also meet the requirements of non-toxic rocket launch. The engine system adopts a turbine, a kerosene pump, and an oxidizer pump coaxially arranged; the inlet of the oxidizer pump is communicated with the oxidant supply source, the inlet of the kerosene pump is communicated with the kerosene supply source, and the outlets of the two pumps are communicated with the thrust chamber; A propellant starter is provided; the turbine is communicated with the gas generator through a pipeline, and an exhaust pipe is provided on the turbine, and a pyrotechnic igniter is installed on the head of the gas generator; one end of the oxidant output secondary pipeline is communicated with the oxidant output main pipeline , the other end communicates with the gas generator; one end of the kerosene output auxiliary pipeline communicates with the kerosene output main pipeline, and the other end communicates with the gas generator.

Description

technical field [0001] The invention belongs to the technical field of liquid rocket engines, and in particular relates to an open cycle liquid oxygen kerosene engine system and a use method. Background technique [0002] As a non-toxic and non-polluting propellant combination for launch vehicles, liquid oxygen kerosene has the characteristics of high specific impulse performance, low cost, and convenient use and maintenance, and is widely used in current launch vehicles. Since the current generation of launch vehicle liquid oxygen kerosene main power engine is a supplementary combustion cycle, although the specific impulse performance of the engine is high, due to the high system pressure of the supplementary combustion cycle engine, the engine system is complicated, and the production and testing of components are difficult. The cost of production and use and maintenance is high, and the output is also low. Conventional launch vehicles in active service use conventional p...

AI Technical Summary

Problems solved by technology

Since the current generation of launch vehicle liquid oxygen kerosene main power engine is a supplementary combustion cycle, although the specific impulse performance of the engine is high, due to the high system pressure of the supplementary combustion cycle engine, the engine system is complicated, and the production and testing of components are difficult. Production and maintenance costs are high, and output is low

Conventional launch vehicles in active service use conventional propellant open-cycle engines. Although the system is simple and easy to use and maintain, the propellant is highly toxic and expensive, and it faces the need for replacement

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